ELI5: Explain Like I'm 5

Chiller

A chiller is a machine that cools down air or liquid so that it can be used to cool something else. It works by taking in warm air or a warm liquid, like water. The air or liquid then passes through a compressor, which compresses the air, or squeezes the liquid, until it is really cold. The cold air or liquid is then sent out of the chiller and used to cool something else.